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Finding the Fourth Proportional to 39,200.40, 58,800.60 and 38,981.70

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Solution

The fourth proportional to 39,200.40, 58,800.60 and 38,981.70 is: 58,472.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,200.40 : 58,800.60 = 38,981.70 : x
  2. Step 2: Convert to fraction form
    39,200.40/58,800.60 = 38,981.70/x
  3. Step 3: Cross multiply
    39,200.40x = 58,800.60 × 38,981.70
  4. Step 4: Simplify right side
    39,200.40x = 2,292,147,349.02
  5. Step 5: Solve for x
    x = 2,292,147,349.02/39,200.40
  6. Step 6: Final answer
    x = 58,472.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.